Complexation between Sodium Poly(styrenesulfonate) and Alkyltrimethylammonium Bromides in the Presence of Dodecyl Maltoside

2015 ◽  
Vol 119 (16) ◽  
pp. 5336-5346 ◽  
Author(s):  
Edit Fegyver ◽  
Róbert Mészáros
Keyword(s):  
Alkyltrimethylammonium Bromides ◽  
Dodecyl Maltoside

scholarly journals Cardiolipin enhances the enzymatic activity of cytochrome bd and cytochrome bo3 solubilized in dodecyl-maltoside

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Amer H. Asseri ◽  
Albert Godoy-Hernandez ◽  
Hojjat Ghasemi Goojani ◽  
Holger Lill ◽  
Junshi Sakamoto ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Oxygen Consumption ◽  
Integral Membrane Proteins ◽  
Terminal Oxidase ◽  
Geobacillus Thermodenitrificans ◽  
E Coli ◽  
Cytochrome Bd ◽  
Cytochrome Bo3 ◽  
Dodecyl Maltoside ◽  
Consumption Activity

AbstractCardiolipin (CL) is a lipid that is found in the membranes of bacteria and the inner membranes of mitochondria. CL can increase the activity of integral membrane proteins, in particular components of respiratory pathways. We here report that CL activated detergent-solubilized cytochrome bd, a terminal oxidase from Escherichia coli. CL enhanced the oxygen consumption activity ~ twofold and decreased the apparent KM value for ubiquinol-1 as substrate from 95 µM to 35 µM. Activation by CL was also observed for cytochrome bd from two Gram-positive species, Geobacillus thermodenitrificans and Corynebacterium glutamicum, and for cytochrome bo3 from E. coli. Taken together, CL can enhance the activity of detergent-solubilized cytochrome bd and cytochrome bo3.

Heat capacities and volumes in aqueous polymer and polymer–surfactant solutions

1987 ◽  
Vol 65 (5) ◽  
pp. 990-995 ◽  
Author(s):  
Gérald Perron ◽  
Josée Francoeur ◽  
Jacques E. Desnoyers ◽  
Jan C. T. Kwak
Keyword(s):  
Thermodynamic Properties ◽  
Chain Length ◽  
Polymer Concentration ◽  
Heat Capacities ◽  
Aqueous Mixtures ◽  
Alkyltrimethylammonium Bromides ◽  
Aqueous Polymer ◽  
Surfactant Interactions ◽  
Polymer Surfactant ◽  
Polymer Interaction

The apparent molar volumes and heat capacities of aqueous mixtures of neutral polymers and ionic surfactants were measured at 25 °C. The polymers chosen were poly(vinylpyrrolidone) (PVP) and poly(ethyleneoxide) (PEO) and the surfactants were the C8, C10, and C12 homologs of sodium alkylsulfates and the C10, C12, and C16 homologs of alkyltrimethylammonium bromides. The polymer–surfactant interactions depend on the nature of both components and on the chain length of the surfactant. The thermodynamic properties of the cationic surfactants are essentially the same in the absence and presence of polymer indicating little surfactant–polymer interaction. On the other hand, the thermodynamic properties of anionic surfactants are shifted, upon the addition of polymers, in the direction of enhanced hydrophobic association. The effect increases with the surfactant chain length and with the polymer concentration. The effect is larger with PVP than with PEO.

Denaturation of lysozyme by n-alkyltrimethylammonium bromides in alkaline solution

1995 ◽  
Vol 91 (17) ◽  
pp. 2805 ◽  
Author(s):  
Malcolm N. Jones ◽  
Gerardo Prieto ◽  
J. M. del Rio ◽  
Felix Sarmiento
Keyword(s):  
Alkaline Solution ◽  
Alkyltrimethylammonium Bromides

Bactericidal properties of straight-chained alkyltrimethylammonium bromides in a simple emulsion system

1967 ◽  
Vol 56 (11) ◽  
pp. 1464-1467 ◽  
Author(s):  
Thomas L. Welsh ◽  
George C. Hoss ◽  
Blaze T. Palermo ◽  
Allen I. Dines
Keyword(s):  
Emulsion System ◽  
Alkyltrimethylammonium Bromides ◽  
Bactericidal Properties

Characterization of the Interactions between Lysozyme andn-Alkyltrimethylammonium Bromides by Zeta Potential Measurements

1996 ◽  
Vol 100 (41) ◽  
pp. 16749-16753 ◽  
Author(s):  
Víctor Mosquera ◽  
Juan Manuel Ruso ◽  
Gerardo Prieto ◽  
Félix Sarmiento
Keyword(s):  
Zeta Potential ◽  
Alkyltrimethylammonium Bromides
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